Youngest Smiles in America

Real Age Test-takers were asked the number of teeth you have and if you have dry mouth. Both factors can indicate your risk of heart disease and if you smoke or ingest too much medications, all of which contribute to your health. Find out which cities have the youngest and oldest smiles in America.

An Iranian military observation aircraft flew within 50 yards of an armed U.S. Navy helicopter over the Persian Gulf this month, sparking concern that top Iranian commanders might not be in full control of local forces, CNN has learned.